26641540254 has 64 divisors (see below), whose sum is σ = 62276861952. Its totient is φ = 7439580000.

The previous prime is 26641540249. The next prime is 26641540267. The reversal of 26641540254 is 45204514662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1473489 + ... + 1491459.

It is an arithmetic number, because the mean of its divisors is an integer number (973075968).

Almost surely, 2^26641540254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26641540254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31138430976).

26641540254 is an abundant number, since it is smaller than the sum of its proper divisors (35635321698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26641540254 is a wasteful number, since it uses less digits than its factorization.

26641540254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18781.

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 26641540254 in words is "twenty-six billion, six hundred forty-one million, five hundred forty thousand, two hundred fifty-four".